feat: uk disclaimer banner (#7428)

* feat: uk disclaimer banner

* bad merge with sitemap

* button

* cypress test

* intercept ordering

* comments

* sitemap was committed idk why

* font weights

* moving uk disclaimer

* removing trash

cypress/e2e/landing.test.ts

@@ -39,4 +39,30 @@ describe('Landing Page', () => {
     cy.get(getTestSelector('pool-nav-link')).last().click()
     cy.url().should('include', '/pools')
   })
+
+  it('does not render uk compliance banner in US', () => {
+    cy.visit('/swap')
+    cy.contains('UK disclaimer').should('not.exist')
+  })
+
+  it('renders uk compliance banner in uk', () => {
+    cy.intercept('https://api.uniswap.org/v1/amplitude-proxy', (req) => {
+      const requestBody = JSON.stringify(req.body)
+      const byteSize = new Blob([requestBody]).size
+      req.alias = 'amplitude'
+      req.reply(
+        JSON.stringify({
+          code: 200,
+          server_upload_time: Date.now(),
+          payload_size_bytes: byteSize,
+          events_ingested: req.body.events.length,
+        }),
+        {
+          'origin-country': 'GB',
+        }
+      )
+    })
+    cy.visit('/swap')
+    cy.contains('UK disclaimer')
+  })
 })

src/components/NavBar/UkBanner.tsx

+import { t, Trans } from '@lingui/macro'
+import { useOpenModal } from 'state/application/hooks'
+import { ApplicationModal } from 'state/application/reducer'
+import styled from 'styled-components'
+import { ButtonText, ThemedText } from 'theme/components'
+import { Z_INDEX } from 'theme/zIndex'
+
+export const UK_BANNER_HEIGHT = 64
+export const UK_BANNER_HEIGHT_MD = 112
+export const UK_BANNER_HEIGHT_SM = 136
+
+const BannerWrapper = styled.div`
+  position: relative;
+  display: flex;
+  background-color: ${({ theme }) => theme.surface1};
+  padding: 20px;
+  border-bottom: 1px solid ${({ theme }) => theme.surface3};
+  z-index: ${Z_INDEX.fixed};
+  box-sizing: border-box;
+  -webkit-box-sizing: border-box;
+  -moz-box-sizing: border-box;
+
+  @media only screen and (max-width: ${({ theme }) => `${theme.breakpoint.md}px`}) {
+    flex-direction: column;
+  }
+`
+
+const BannerTextWrapper = styled(ThemedText.BodySecondary)`
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+
+  @media only screen and (max-width: ${({ theme }) => `${theme.breakpoint.md}px`}) {
+    @supports (-webkit-line-clamp: 2) {
+      white-space: initial;
+      display: -webkit-box;
+      -webkit-line-clamp: 2;
+      -webkit-box-orient: vertical;
+    }
+  }
+
+  @media only screen and (max-width: ${({ theme }) => `${theme.breakpoint.sm}px`}) {
+    @supports (-webkit-line-clamp: 3) {
+      white-space: initial;
+      display: -webkit-box;
+      -webkit-line-clamp: 3;
+      -webkit-box-orient: vertical;
+    }
+  }
+`
+
+const ReadMoreWrapper = styled(ButtonText)`
+  flex-shrink: 0;
+  width: max-content;
+
+  :focus {
+    text-decoration: none;
+  }
+`
+
+export const bannerText = t`
+  This web application is provided as a tool for users to interact with the Uniswap Protocol on
+  their own initiative, with no endorsement or recommendation of cryptocurrency trading activities. In doing so,
+  Uniswap is not recommending that users or potential users engage in cryptoasset trading activity, and users or
+  potential users of the web application should not regard this webpage or its contents as involving any form of
+  recommendation, invitation or inducement to deal in cryptoassets.
+`
+
+export function UkBanner() {
+  const openDisclaimer = useOpenModal(ApplicationModal.UK_DISCLAIMER)
+
+  return (
+    <BannerWrapper>
+      <BannerTextWrapper lineHeight="24px">{t`UK disclaimer:` + ' ' + bannerText}</BannerTextWrapper>
+      <ReadMoreWrapper>
+        <ThemedText.BodySecondary lineHeight="24px" color="accent1" onClick={openDisclaimer}>
+          <Trans>Read more</Trans>
+        </ThemedText.BodySecondary>
+      </ReadMoreWrapper>
+    </BannerWrapper>
+  )
+}

src/components/NavBar/UkDisclaimerModal.tsx

+import { Trans } from '@lingui/macro'
+import { ButtonEmphasis, ButtonSize, ThemeButton } from 'components/Button'
+import Column from 'components/Column'
+import Modal from 'components/Modal'
+import { X } from 'react-feather'
+import { useCloseModal, useModalIsOpen } from 'state/application/hooks'
+import { ApplicationModal } from 'state/application/reducer'
+import styled from 'styled-components'
+import { ButtonText, ThemedText } from 'theme/components'
+
+import { bannerText } from './UkBanner'
+
+const Wrapper = styled(Column)`
+  padding: 8px;
+`
+
+const ButtonContainer = styled(Column)`
+  padding: 8px 12px 4px;
+`
+
+const CloseIconWrapper = styled(ButtonText)`
+  display: flex;
+  color: ${({ theme }) => theme.neutral1};
+  justify-content: flex-end;
+  padding: 8px 0px 4px;
+
+  :focus {
+    text-decoration: none;
+  }
+`
+
+const StyledThemeButton = styled(ThemeButton)`
+  width: 100%;
+`
+
+export function UkDisclaimerModal() {
+  const isOpen = useModalIsOpen(ApplicationModal.UK_DISCLAIMER)
+  const closeModal = useCloseModal()
+
+  return (
+    <Modal isOpen={isOpen} onDismiss={closeModal}>
+      <Wrapper gap="md">
+        <CloseIconWrapper onClick={() => closeModal()}>
+          <X size={24} />
+        </CloseIconWrapper>
+        <Column gap="sm">
+          <ThemedText.HeadlineLarge padding="0px 8px" fontSize="24px" lineHeight="32px">
+            <Trans>Disclaimer for UK residents</Trans>
+          </ThemedText.HeadlineLarge>
+          <ThemedText.BodyPrimary padding="8px 8px 12px" lineHeight="24px">
+            {bannerText}
+          </ThemedText.BodyPrimary>
+        </Column>
+        <ButtonContainer gap="md">
+          <StyledThemeButton size={ButtonSize.large} emphasis={ButtonEmphasis.medium} onClick={() => closeModal()}>
+            <Trans>Dismiss</Trans>
+          </StyledThemeButton>
+        </ButtonContainer>
+      </Wrapper>
+    </Modal>
+  )
+}

src/components/TopLevelModals/index.tsx

@@ -6,6 +6,7 @@ import BaseAnnouncementBanner from 'components/Banner/BaseAnnouncementBanner'
 import AddressClaimModal from 'components/claim/AddressClaimModal'
 import ConnectedAccountBlocked from 'components/ConnectedAccountBlocked'
 import FiatOnrampModal from 'components/FiatOnrampModal'
+import { UkDisclaimerModal } from 'components/NavBar/UkDisclaimerModal'
 import DevFlagsBox from 'dev/DevFlagsBox'
 import useAccountRiskCheck from 'hooks/useAccountRiskCheck'
 import Bag from 'nft/components/bag/Bag'
@@ -34,6 +35,7 @@ export default function TopLevelModals() {
       <TransactionCompleteModal />
       <AirdropModal />
       <FiatOnrampModal />
+      <UkDisclaimerModal />
       {shouldShowDevFlags && <DevFlagsBox />}
     </>
   )

src/pages/App.tsx

@@ -4,6 +4,7 @@ import { getDeviceId, sendAnalyticsEvent, sendInitializationEvent, Trace, user }
 import ErrorBoundary from 'components/ErrorBoundary'
 import Loader from 'components/Icons/LoadingSpinner'
 import NavBar, { PageTabs } from 'components/NavBar'
+import { UK_BANNER_HEIGHT, UK_BANNER_HEIGHT_MD, UK_BANNER_HEIGHT_SM, UkBanner } from 'components/NavBar/UkBanner'
 import { useFeatureFlagsIsLoaded } from 'featureFlags'
 import { useUniswapXDefaultEnabled } from 'featureFlags/flags/uniswapXDefault'
 import { useAtom } from 'jotai'
@@ -11,6 +12,8 @@ import { useBag } from 'nft/hooks/useBag'
 import { lazy, Suspense, useEffect, useLayoutEffect, useMemo, useState } from 'react'
 import { Navigate, Route, Routes, useLocation, useSearchParams } from 'react-router-dom'
 import { shouldDisableNFTRoutesAtom } from 'state/application/atoms'
+import { useAppSelector } from 'state/hooks'
+import { AppState } from 'state/reducer'
 import { RouterPreference } from 'state/routing/types'
 import { useRouterPreference, useUserOptedOutOfUniswapX } from 'state/user/hooks'
 import { StatsigProvider, StatsigUser } from 'statsig-react'
@@ -60,15 +63,23 @@ const MobileBottomBar = styled.div`
   }
 `
 
-const HeaderWrapper = styled.div<{ transparent?: boolean }>`
+const HeaderWrapper = styled.div<{ transparent?: boolean; bannerIsVisible?: boolean; scrollY: number }>`
   ${flexRowNoWrap};
   background-color: ${({ theme, transparent }) => !transparent && theme.surface1};
   border-bottom: ${({ theme, transparent }) => !transparent && `1px solid ${theme.surface3}`};
   width: 100%;
   justify-content: space-between;
   position: fixed;
-  top: 0;
+  top: ${({ bannerIsVisible }) => (bannerIsVisible ? Math.max(UK_BANNER_HEIGHT - scrollY, 0) : 0)}px;
   z-index: ${Z_INDEX.dropdown};
+
+  @media only screen and (max-width: ${({ theme }) => `${theme.breakpoint.md}px`}) {
+    top: ${({ bannerIsVisible }) => (bannerIsVisible ? Math.max(UK_BANNER_HEIGHT_MD - scrollY, 0) : 0)}px;
+  }
+
+  @media only screen and (max-width: ${({ theme }) => `${theme.breakpoint.sm}px`}) {
+    top: ${({ bannerIsVisible }) => (bannerIsVisible ? Math.max(UK_BANNER_HEIGHT_SM - scrollY, 0) : 0)}px;
+  }
 `
 
 export default function App() {
@@ -80,14 +91,18 @@ export default function App() {
   const currentPage = getCurrentPageFromLocation(pathname)
   const isDarkMode = useIsDarkMode()
   const [routerPreference] = useRouterPreference()
-  const [scrolledState, setScrolledState] = useState(false)
+  const [scrollY, setScrollY] = useState(0)
+  const scrolledState = scrollY > 0
   const isUniswapXDefaultEnabled = useUniswapXDefaultEnabled()
   const userOptedOutOfUniswapX = useUserOptedOutOfUniswapX()
   const routerConfig = useRouterConfig()
 
+  const originCountry = useAppSelector((state: AppState) => state.user.originCountry)
+  const renderUkBannner = Boolean(originCountry) && originCountry === 'GB'
+
   useEffect(() => {
     window.scrollTo(0, 0)
-    setScrolledState(false)
+    setScrollY(0)
   }, [pathname])
 
   const [searchParams] = useSearchParams()
@@ -148,7 +163,7 @@ export default function App() {
 
   useEffect(() => {
     const scrollListener = () => {
-      setScrolledState(window.scrollY > 0)
+      setScrollY(window.scrollY)
     }
     window.addEventListener('scroll', scrollListener)
     return () => window.removeEventListener('scroll', scrollListener)
@@ -198,7 +213,8 @@ export default function App() {
             api: process.env.REACT_APP_STATSIG_PROXY_URL,
           }}
         >
-          <HeaderWrapper transparent={isHeaderTransparent}>
+          {renderUkBannner && <UkBanner />}
+          <HeaderWrapper transparent={isHeaderTransparent} bannerIsVisible={renderUkBannner} scrollY={scrollY}>
             <NavBar blur={isHeaderTransparent} />
           </HeaderWrapper>
           <BodyWrapper>

src/state/application/reducer.ts

@@ -43,6 +43,7 @@ export enum ApplicationModal {
   TAX_SERVICE,
   TIME_SELECTOR,
   VOTE,
+  UK_DISCLAIMER,
   UNISWAP_NFT_AIRDROP_CLAIM,
 }